diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1167aaee..7fed1231 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -75,7 +75,7 @@ jobs:
       # REPOSITORY CHECKOUT
       # Full history needed for accurate change detection
       - name: Checkout Repository
-        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
           fetch-depth: 0
 
@@ -138,7 +138,7 @@ jobs:
       # REPOSITORY CHECKOUT
       # Shallow clone sufficient for linting current state
       - name: Checkout Repository
-        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
 
       # SMART CHANGE DETECTION
       # Only runs when documentation files change
@@ -217,7 +217,7 @@ jobs:
       # REPOSITORY CHECKOUT
       # Shallow clone sufficient for infrastructure validation
       - name: Checkout Repository
-        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
 
       # SMART CHANGE DETECTION
       # Each matrix job only runs if relevant files changed
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index f089a330..47f70f07 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -29,7 +29,7 @@ jobs:
       deployments: write
     steps:
       - name: Checkout
-        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
       - name: Get Docker image
         id: image
         run: |
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 75369d9e..bab4b118 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -182,7 +182,7 @@ jobs:
       # REPOSITORY CHECKOUT
       # Full history needed for accurate version determination
       - name: Checkout
-        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
           fetch-depth: 0
 
@@ -312,7 +312,7 @@ jobs:
       # REPOSITORY CHECKOUT
       # Required for Dockerfile analysis and security context
       - name: Checkout repository
-        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/maintenance.yml b/.github/workflows/maintenance.yml
index 501c80cd..f0088573 100644
--- a/.github/workflows/maintenance.yml
+++ b/.github/workflows/maintenance.yml
@@ -107,7 +107,7 @@ jobs:
       # REPOSITORY CHECKOUT
       # Full history required for accurate TODO comparison and tracking
       - name: Checkout Repository
-        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
           fetch-depth: 0
 
@@ -188,7 +188,7 @@ jobs:
       # REPOSITORY CHECKOUT
       # Required for comprehensive file and dependency analysis
       - name: Checkout Repository
-        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
 
       # STORAGE HEALTH ANALYSIS
       # Identifies large files that may impact repository performance
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 6c737feb..05efe8b9 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -66,7 +66,7 @@ jobs:
       is_prerelease: ${{ steps.version.outputs.is_prerelease }}
     steps:
       - name: Checkout
-        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
           fetch-depth: 0
       - name: Determine version
@@ -109,7 +109,7 @@ jobs:
       - wait-for-tests
     steps:
       - name: Checkout
-        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
           fetch-depth: 0
       - name: Generate changelog
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index c2919a57..5c72be3a 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -98,7 +98,7 @@ jobs:
       # REPOSITORY CHECKOUT
       # Full repository access required for comprehensive analysis
       - name: Checkout repository
-        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
 
       # CODEQL INITIALIZATION
       # Configures language-specific analysis parameters
@@ -136,7 +136,7 @@ jobs:
       # REPOSITORY CHECKOUT
       # Required for dependency comparison between base and head branches
       - name: Checkout Repository
-        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
 
       # DEPENDENCY VULNERABILITY ANALYSIS
       # Analyzes dependency changes for security vulnerabilities
@@ -167,7 +167,7 @@ jobs:
       # REPOSITORY CHECKOUT
       # Required for dependency file access and analysis
       - name: Checkout Repository
-        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
 
       # PYTHON ENVIRONMENT SETUP (COMPOSITE ACTION)
       # Uses centralized Python setup for production dependency analysis
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 9282446c..326e8070 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -87,7 +87,7 @@ jobs:
       # REPOSITORY CHECKOUT
       # Complete repository needed for comprehensive test execution
       - name: Checkout Repository
-        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
 
       # SMART CHANGE DETECTION
       # Analyzes changes to determine if test execution is necessary